Nokia RH-47 Series Rf Description And Troubleshooting page 30

RH-47
7 - RF Description and Troubleshooting
Use Phoenix to select
TX_Data Type: "1" or "0"
TX Power Level: 10
Yes
Oscilloscope
R612
C627
C717
C623
J614
Yes
Oscilloscope
R715
R715
R716
R716
Yes
Oscilloscope
R823
C641 (NF)
C640 (NF)
C803
Yes
Spectrum Analyzer
R828 PA input
Yes
Use Phoenix to select
TX_Data Type: Random
TX Power Level: 10
Yes
Spectrum analyzer
L801 (B1_in) (PA N801
Pout_GSM)
Power >= +24 dBm, 836.6
MHz
Yes
Spectrum analyzer
RF-connector J800
Pout
= +23 dBm, 836.6 MHz
Yes
GSM TX
OK
Page 30
Company Confidential
VREF1
Vdc =
VR2
Vdc =
TXP
V =
VR5
Vdc =
VR3 Vdc =
TXIOUTP 67kHz
Vac = 0.4 Vpp, Vdc =
1.1 V
TXIOUTN
67kHz
Vac = 0.4 Vpp, Vdc =
1.1 V
TXQOUTP 67kHz
Vac = 0.4 Vpp, Vdc =
1.1 V
TXQOUTN
67kHz
Vac = 0.4 Vpp, Vdc =
1.1 V
VTXB_850
Vdc = 2.78 Volt
VC1
Vdc = 0 Volt
VC2 Vdc = 2.78 Volt
VBD Vdc = 2.78 Volt
PA Input P>= 5 dBm, 836.6 MHz
GSM850 (with hp 85024A)
Compare with good
sample
Check PA N801
No Check Power Loop
L801,V801
Check TXC
Check
No Directional Coupler
(L801)
Antenna Switch (Z601)
LPF (C742,743,L610)
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Company Confidential
Nokia Customer Care
1.35 Volt
2.78 Volt No
1.8 Volt
2.78 Volt
2.78 Volt
No
No
Mjoelner Serial
No
GSM TX SAW Filter
Check
Base Band
Check
Base Band
Check:
Interface
Mjoelner
Check
V802 Buffer
Mjoelner
Synthesizer
Issue 1 05/04